﻿//-----------------------------------------------------------------------
// <copyright company="www.3WayWebdesign.de">
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// </copyright>
//
// <author>Michael Morbach</author>
// <email>Michael@3waywebdesign.de</email>
// <web>http://www.3waywebdesign.de</web>
//-----------------------------------------------------------------------

namespace Tww.Pixxler.WPFPixxlerAlbumModule.Services
{
    #region Imports

    using Microsoft.Practices.Prism.Events;
    using Microsoft.Practices.Prism.Regions;
    using Microsoft.Practices.Unity;
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using Tww.AppToolkit.AppInfrastructure.Events.CompositeEvents.Menu;
    using Tww.AppToolkit.AppInfrastructure.Interfaces.Services;
    using Tww.AppToolkit.AppInfrastructure.Models.Menu;
    using Tww.Pixxler.PixxlerAppInfrastructure.Interfaces.API;
    using Tww.Pixxler.PixxlerAppInfrastructure.Interfaces.Services;
    using Tww.Pixxler.PixxlerAppInfrastructure.Interfaces.ViewModels;
    using Tww.Pixxler.PixxlerAppInfrastructure.Interfaces.Views;
    using Tww.Pixxler.SharedObjects.DTO;


    #endregion

    public class AlbumService : IAlbumService
    {
        #region Private Fields

        #endregion

        #region Ctors

        public AlbumService( IUnityContainer unityContainer, IRegionManager regionManager, IEventAggregator eventAggregator )
        {
            this.UnityContainer = unityContainer;
            this.RegionManager = regionManager;
            this.EventAggregator = eventAggregator;

            this.PixxlerAPI = unityContainer.Resolve<IPixxlerAPI>();
            this.RegisterEvents();
        }

        #endregion

        #region Public Properties

        #endregion

        #region Private Properties

        protected IPixxlerAPI PixxlerAPI { get; set; }
        protected IUnityContainer UnityContainer { get; set; }
        protected IRegionManager RegionManager { get; set; }
        protected IEventAggregator EventAggregator { get; set; }

        #endregion

        #region Public Methods

        public void OpenAlbum( PixxlerAlbumDTO album )
        {
            var contentService = this.UnityContainer.Resolve<IContentService>();
            var contentPresenter = contentService.AddNewContent();

            var albumExplorer = this.UnityContainer.Resolve<IAlbumExplorerView>();
            ( ( IAlbumExplorerViewModel )albumExplorer.ContentViewModel ).LoadAlbenBilder( album );
            contentPresenter.NavigateNext( albumExplorer );
        }

        #endregion

        #region Private Methods

        private void RegisterEvents()
        {
            if ( this.PixxlerAPI != null )
            {
                this.PixxlerAPI.UserAPI.UserLoginSucceded += UserAPI_UserLoginSucceded;
                this.PixxlerAPI.AlbumAPI.BenutzerAlben.CollectionChanged += BenutzerAlben_CollectionChanged;
            }

            // Events abbonieren
            this.EventAggregator.GetEvent<MenuEntryClicked>().Subscribe( this.OnMenuItemSelected );
        }



        private void UnRegisterEvents()
        {
            if ( this.PixxlerAPI != null )
            {
                this.PixxlerAPI.UserAPI.UserLoginSucceded -= UserAPI_UserLoginSucceded;
                this.PixxlerAPI.AlbumAPI.BenutzerAlben.CollectionChanged -= BenutzerAlben_CollectionChanged;
            }
        }



        #endregion

        #region Eventhandling

        void UserAPI_UserLoginSucceded( object sender, EventArgs e )
        {
            this.PixxlerAPI.AlbumAPI.LoadBenutzerAlben();
        }

        void BenutzerAlben_CollectionChanged( object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e )
        {
            var menuTreeService = this.UnityContainer.Resolve<ITreeMenuService>();

            if ( menuTreeService != null )
            {
                switch ( e.Action )
                {
                    case System.Collections.Specialized.NotifyCollectionChangedAction.Add:
                        foreach ( PixxlerAlbumDTO newAlbumEntry in e.NewItems )
                        {
                            menuTreeService.AddRootMenuEntry( new AppToolkit.AppInfrastructure.Models.Menu.MenuEntry() { Title = newAlbumEntry.AlbumTitel } );
                        }
                        break;
                    case System.Collections.Specialized.NotifyCollectionChangedAction.Move:
                        break;
                    case System.Collections.Specialized.NotifyCollectionChangedAction.Remove:
                        foreach ( PixxlerAlbumDTO existingAlbumEntry in e.OldItems )
                        {
                            menuTreeService.RemoveMenuEntry( existingAlbumEntry.AlbumTitel );
                        }
                        break;
                    case System.Collections.Specialized.NotifyCollectionChangedAction.Replace:
                        break;
                    case System.Collections.Specialized.NotifyCollectionChangedAction.Reset:
                        break;
                    default:
                        break;
                }
            }
        }

        void OnMenuItemSelected( MenuEntry menuItem )
        {
            if ( menuItem != null )
            {
                var album = this.PixxlerAPI.AlbumAPI.BenutzerAlben.FirstOrDefault( z => z.AlbumTitel == menuItem.Title );

                if ( album != null )
                {
                    this.OpenAlbum( album );
                }
            }
        }

        #endregion

        #region Events

        #endregion



    }
}
